290981964 has 96 divisors (see below), whose sum is σ = 846469120. Its totient is φ = 75748608.

The previous prime is 290981959. The next prime is 290981987. The reversal of 290981964 is 469189092.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84582 + ... + 87954.

Almost surely, 2^290981964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290981964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423234560).

290981964 is an abundant number, since it is smaller than the sum of its proper divisors (555487156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

290981964 is a wasteful number, since it uses less digits than its factorization.

290981964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479 (or 3477 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 290981964 is about 17058.1934565182. The cubic root of 290981964 is about 662.6568478281.

The spelling of 290981964 in words is "two hundred ninety million, nine hundred eighty-one thousand, nine hundred sixty-four".